Line for conveying and forming box-like bodies of different types

Abstract

A line for conveying and forming box-like bodies of different types includes at least one suction belt, closed in a loop and arranged at least in its initial portion, at least one strap, closed in a loop and provided with protruding teeth. The strap is parallel to the suction belt and is arranged at least in the end portion of the line and has the initial front juxtaposed with respect to the end portion of the suction belt. The line further includes at least one band closed in a loop and provided with protruding tabs, parallel to the at least one suction belt and to the at least one strap and is arranged along the entire line, and has a start area that is juxtaposed with respect to the at least one suction belt and an end area that is juxtaposed with respect to the at least one strap.

The invention claimed is: 
     
       1. A line for conveying and forming boxes of different types, comprising:
 at least one suction belt comprising an initial portion, closed in a loop arranged at least in said initial portion, 
 at least one strap, closed in a loop and provided with a plurality of protruding teeth, which is parallel to said suction belt and is arranged at least in an end portion of said line and has an initial front substantially juxtaposed with respect to an end portion of said suction belt, and 
 at least one band closed in a loop and provided with a plurality of protruding tabs, which is parallel to said at least one suction belt and to said at least one strap and is arranged along the entire line, and has a start area that is substantially juxtaposed with respect to said at least one suction belt and an end area that is substantially juxtaposed with respect to said at least one strap, 
 said band closed in a loop comprising an upper face and being movable from a first level of alignment of its upper face with an upper face of said at least one suction belt and an upper face of the at least one strap, to a second level, which is separated from the upper face of said at least one suction belt and of the at least one strap by a distance at least equal to a height of said protruding tabs. 
 
     
     
       2. The line according to  claim 1 , wherein said at least one suction belt comprises a plurality of suction holes for locking in place a flat sheet to be subjected to forming. 
     
     
       3. The line according to  claim 1 , wherein the spacing between said protruding teeth of said at least one strap closed in a loop is greater than a width of an at least partially formed box to be conveyed. 
     
     
       4. The line according to  claim 1 , wherein said at least one strap closed in the loop are at least two in number, a first strap being provided with first protruding teeth designed to abut against a start face of a respective at least partially formed box to be conveyed, and a second strap being provided with second protruding teeth designed to abut against an end face of said at least partially formed box. 
     
     
       5. The line according to  claim 1 , wherein said at least one strap closed in the loop are at least four in number, wherein said four straps include two first outer straps and two second inner straps, a first strap being provided with first protruding teeth designed to abut against a start face of a respective at least partially formed box to be conveyed, and a second strap being provided with second protruding teeth designed to abut against an end face of said at least partially formed box. 
     
     
       6. The line according to  claim 1 , wherein a spacing between said protruding tabs of said at least one band closed in a loop is greater than a width of an at least partially formed box to be conveyed. 
     
     
       7. The line according to  claim 1 , wherein said at least one band closed in the loop are at least two in number, each band being closed in at least one loop, a first band being provided with first protruding tabs designed to abut against a start face of a respective at least partially formed box to be conveyed, and a second band being provided with second protruding tabs designed to abut against an end face of said at least partially formed box. 
     
     
       8. The line according to  claim 1 , wherein said at least one band closed in the loop are at least four in number, each band being closed in at least one loop, wherein said at least four straps include two first outer bands and two second inner bands, a first band being provided with first protruding tabs designed to abut against a start face of a respective at least partially formed box to be conveyed, and a second band being provided with second protruding tabs designed to abut against an end face of said at least partially formed box. 
     
     
       9. The line according to  claim 1 , further comprising at least one station for folding a sheet, said station comprising movable tapes aligned with a corresponding abutment, a translation of said tapes toward said abutment with an interposition of said sheet causing an at least partial wrapping of said sheet onto said abutment with consequent forming of said at least partially formed box.